Isn't there a calculator or chart somewhere that will give you fps, drop in yardage and energy of bullet if you put in the bullet dia and weight you want to shoot?
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September 18, 2009, 02:18 PM
I think stevespages has one
September 18, 2009, 02:52 PM
Most reloading manuals lists these charts along with the technical data in the back of the manual.
September 18, 2009, 04:06 PM
Sierra infinity 6 is a CD put out by the folks at sierra. You HAVE to really know the velocity, not what the book says it SHOULD be. That means you need a chronograph, or know someone with one to clock tour bullets.
Diameter has nothing to do with trajectory, bullet shape is what determine drop at long distances. Also, the bullet you have must be on the CD, most match bullets are on there.
Since you didn't specify whether you're asking about handgun, rifles, shotguns or slingshots, that's my answer.:rolleyes:
September 18, 2009, 05:06 PM
There's a number of them on the net
Just search for something like "ballistics calculator" with maybe free, online, etc. etc.
September 18, 2009, 05:29 PM
Isn't there a calculator or chart somewhere that will give you fps, drop in yardage and energy of bullet if you put in the bullet dia and weight you want to shoot?You are looking for ballistic (http://en.wikipedia.org/wiki/Ballistics) calculator. Check the link for details.
Finding muzzle speed and chamber pressure from round and barrel parameters is studied by internal ballistics. QuickLoad (http://www.neconos.com/details3.htm) solves the internal ballistics problem. I do not know any online programs that do the internal ballistics.
Finding drop, energy and wind deflection of the bullet by muzzle fps, bullet characteristics, and data on wind and atmosphere is external ballistics problem. There are many online calculators for this. Here is one (http://www.hornady.com/ballistics/ballistics_calculator.php). QuickTarget program, which is made by the same company as QuickLoad, solves the external ballistics problem. It may take data from the QuickLoad, and in addition to numerical answers draws a lot of useful graphs.
September 18, 2009, 06:10 PM
Last year Federal sent out a notice that they have free ballistic software on their web site.
I haven't used it, so I can't verify anything about it.
September 18, 2009, 06:13 PM
Winchester also has one on their website.
Hope this helps.
September 18, 2009, 06:18 PM
Free software from Remington too. I've used it for years.